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| 183_notes:energy_dissipation [2021/05/31 16:43] – [Where does the energy go?] stumptyl | 183_notes:energy_dissipation [2021/06/02 23:15] (current) – [Air Resistance] stumptyl |
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| Let's say you dropped a metal ball from rest. Below is a set of frames (taken at equal time intervals) from a video of a metal ball being dropped straight down. Notice the ball's displacement increases as each time step elapses. The effect of air resistance is very small. To a reasonable degree, we can [[183_notes:constantf|model this motion using constant force]]. | Let's say you dropped a metal ball from rest. Below is a set of frames (taken at equal time intervals) from a video of a metal ball being dropped straight down. Notice the ball's displacement increases as each time step elapses. The effect of air resistance is very small. To a reasonable degree, we can [[183_notes:constantf|model this motion using constant force]]. |
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| {{ 183_notes:mi3e_07-039.jpg?400 }} | {{ 183_notes:week10_dissipation1.png?400 }} |
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| If you instead dropped a coffee filter, you would observe something all together different. The frames below are taken from a video of a coffee filter dropped from rest. Notice that the displacement between each frame is roughly the same (especially near the end of the video). This latter motion could be modeled to a reasonable degree [[183_notes:displacement_and_velocity|using constant velocity motion]]. | If you instead dropped a coffee filter, you would observe something all together different. The frames below are taken from a video of a coffee filter dropped from rest. Notice that the displacement between each frame is roughly the same (especially near the end of the video). This latter motion could be modeled to a reasonable degree [[183_notes:displacement_and_velocity|using constant velocity motion]]. |
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| {{ 183_notes:mi3e_07-040.jpg?600 }} | {{ 183_notes:week10_dissipation2.png?600 }} |
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| ==== Where does the energy go? ==== | ==== Where does the energy go? ==== |